Electric liquid hbatins system



Aug. 4, 1925.

11 A.. 7, 8 4 5, 1.. Q M E l s f .W5 W\N\m,. 2 G9 Nl .um www sm iH. .DMDMO .Q Amm l 4k .l NF m. C E L E Patented Aug. 4, 1925.

ALFREDO DOMINGO POU, OF BUENOS AIRES, ARGENTINA.

ELECTRIC LIQUID-HEATING SYSTEM.

Application filed October 20, 1923. SerialI No. 669,782.

To all whom it may concer-n:

Be it known that I, ALFREDO DoMTNGo POU, citizen of the Republic ofUruguay, residing at 186 Azcuenaga Street, Buenos Aires, Argentina, haveinvented certain new and useful Improvements in Electric Liquid- HeatingSystems, 0f which the following is a specification.

My invention relates to a new system for heating all kinds of liquids bymeans of direct contact with electrodes, while also providing for acirculation of current centrally through the liquid, said system being`applicable to boilers for generating steam, for heatingall sorts ofliquids and for effecting various chemical reactions, but moreparticularly to a boiler or auto-clave for water, in which alternating'electric current is used as a heating means.

A clear idea of the disposition and form of the elements is given by thevappended drawings, which show an apparatus according to my presentinvention specially devised for tri-phase current.

In the said drawings:

Figure 1, is a. sectional view of one of thc electrodes.

Figure 2, is a horizontal cross-section of the autoclave.

Figure 3, is a vertical central section of the same.

Similar characters of reference denote same or like parts throughout thesaid figures.

The electrode consists of a bar 1 on one end of which a small bar 2 isscrewed, said bar 2 being in direct contact with the water within theboiler. For insulation purposes the bar 1 is enveloped in a cover ofmica 3, and both elements are introduced into an eX- ternallyscrewthreaded tube 4 on which a stuffing box 5 is screwed against bar 2so as to prevent the water in the boiler from entering said tube 41.Said tube 4 is firmly secured to the bar 1 by means of the piece 6. Theouter end of bar 1 protruding from the said tube 4 has a portion 7 ofsquare or like cross-section which allows the fixing thereon of a handlesuch as 16 in order to rotate the electrode and to introduce it more orless within the boiler. Said bar 1 has also an outer screwthreadedportion 8 immediately beyond the square portion 7 on which, by means ofthe nuts 9, the terminals of the electric cables are fixed.

The above electrode is introduced within an interiorly screwthreadedtube l10 having at its inner end a hinged cover l1 and closed at itsouter end by a nut l2. The tube 10 is fixed to the body 13 of the boilerby a'support 14 which carries a` sliding door 15 .in ord-er to totallyclose the tube 10 when the electrode proper is in its outer position.

The electrodes may be placed on the circumferential wall of the boilerin twok or more planes as shown in Fig. 3, or they may be placed at thetop and bottom thereof. Theiry number in each plane may be three asshown, or there may be six connected twoby-two in parallel. 21, 22 and23 are re volving blades which on rotating agitate the contents of theboiler so as to maintain a uniform temperature therein. The blades 2lare fixed to a central vertical shaft 24, theblades 22 are fixed to anintermediate tubular shaft 25 and the blades 23 to the outer tubularshaft 26, the three shafts being nested, as shown. Said shafts may berotated at any uniform or variable speed by suitable means such as thepulleys 27 fixed on a horizontal shaft 28 which bymeans of a pinion 29transmits movement to a pinion 30 on the shaft 211. Movement istransmitted to the intermediate shaft 25 from said shaft 28 by a toothedwheel 31 meshing with a crown wheel 32, and to the outer shaft 26 by theinter-meshing pinion and crown wheel 33 and 34.

The free ends of the tubular shafts 25 and 26 are provided withstuffing-boxes 35 and 36 to prevent the entrance of water therein.

It is obvious that many constructional and other changes may beintroduced without departing from the scope of my invention, ashereinafter claimed.

Having now fully described and ascertained the nature of my presentinvention and in what manner the same is to be carried into practice, Ideclare that what I claim and desire to protect by Letters Patentisz- 1. An apparatus for electrically heating liquids, comprising areceptacle; a plurality of sets of electrodes projecting into theinterior of the receptacle in different horizontal planes, with theirinner ends in direct contact with the liquid to be heated, an agitatorfor the liquid disposed within said receptacle; and means for rotatingthe agitator.

2. An apparatus for electrically heating liquids, comprising areceptacle; a set ot tubes projecting into the interior thereof; anendwise-adjustable electrode inserted through each tube and protrudingbeyond the same at its inner end, and a cover hinged to the inner end ofeach tube to close the same when the respective electrode is Withdrawn.

3. An apparatus for electrically heating liquids, comprising areceptacle; a set of tubes projecting into the interior thereof; asupport individual to each tube secured t0 said receptacle; anendWise-adjustable electrode inserted through each tube and protrudingbeyond the saine at its inner end, and a door slidably carried by eachsupport to close the respective tube when the electrode therein iswithdrawn.

4. An apparatus for electrically heating liquids. comprising areceptacle; a set ot tubes projecting into the interior thereof; asupport individual to each tube secured to said receptacle; anendWise-adjustable electrode inserted through each tube and protrudingbeyond the same at its inner end; a door slidably carried by eachsupport to close the respective tube intermediate its ends when theelectrode therein is with` drawn; and a hinged cover on the inner end ofeach tube to close the saine.

5. An apparatus for electrically heating liquids, comprising areceptacle; a set ot supports secured thereto; an internallythreadedtube mounted in each support and projecting into the interior of thereceptacle; an endWise-adjustable, externallythreaded tube mounted inthe first-named tube and projecting beyond the inner end thereof; and anelectrode in the secondnan'ied tube for adjustment therewith, the innerend of each electrode being in direct contact with the liquid to beheated.

6. An electric heater, according to claim 5, in which the inner end ofeach internallythreaded tube has a hinged cover to close the same whenthe associated externallythreaded tube and electrode are Withdrawn.

7. An elect-ric heater, according to claim 5, in which each supportcarries a sliding door to close the corresponding internallythreadedtube when the associated externally-threaded tube and electrode arelWithdrawn.

8. An electric heater'7 according to claim 5, in which each supportcarries a sliding door to close the corresponding internallythreadedtube intermediate the ends thereof when the associatedexternally-threaded tube and electrode are withdrawn, and in which theinner end of each said internallythreaded tube has a hinged closure.

9. An apparatus for electrically heating liquids, comprising areceptacle; a plurality of sets o' electrodes mounted in the wall of thereceptacle in different horizontal planes, with their inner ends indirect Contact with the liquid to be heated; and means for causing acirculation o't' the liquid between the said inner ends ot theelectrodes.

In testimony whereof l aflix mv signature.

ALFREDO DOMINGO POU.

